電熱鍋爐的原理介紹

1、電熱管供熱原理

電(dian)(dian)(dian)熱(re)(re)管(guan)供熱(re)(re)目前(qian)被普遍采用在電(dian)(dian)(dian)熱(re)(re)鍋爐上，適合小(xiao)范(fan)圍供熱(re)(re)。它能承(cheng)受50Hz，1500V交流電(dian)(dian)(dian)壓。單(dan)位(wei)表面積(ji)的功率3~8W/cm2，一般較大容量(liang)電(dian)(dian)(dian)熱(re)(re)管(guan)做成多頭形(xing)式，功率可達30kW，具有(you)結構簡單(dan)，轉換過程中沒有(you)損失等特點。電(dian)(dian)(dian)熱(re)(re)管(guan)質量(liang)的高(gao)低(di)，直接影響電(dian)(dian)(dian)熱(re)(re)鍋爐的運(yun)行可靠性和使用壽命。

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2、電磁感應式供熱原理

電(dian)磁感(gan)應(ying)式利用電(dian)流流過帶有鐵芯的線(xian)圈(quan)產生(sheng)交變磁場，在不同(tong)的材料中產生(sheng)渦流電(dian)磁感(gan)應(ying)而發生(sheng)熱量。由于存在感(gan)抗，轉(zhuan)換中產生(sheng)無功(gong)(gong)功(gong)(gong)率，功(gong)(gong)率因素<1，因此(ci)一般(ban)只(zhi)用在較(jiao)小(xiao)容量的電(dian)熱設備上(shang)。

3、電極式供熱原理

電(dian)(dian)極(ji)(ji)式供熱比(bi)較(jiao)(jiao)少見，多用(yong)于冶煉(lian)金屬行(xing)業，在(zai)家用(yong)電(dian)(dian)鍋(guo)爐中(zhong)較(jiao)(jiao)少采用(yong)。當電(dian)(dian)流從一個電(dian)(dian)極(ji)(ji)引入并(bing)通(tong)(tong)過水(shui)到另(ling)一個電(dian)(dian)極(ji)(ji)，水(shui)就象一個通(tong)(tong)電(dian)(dian)的電(dian)(dian)阻被加熱或沸騰(teng)。調節電(dian)(dian)極(ji)(ji)在(zai)水(shui)中(zhong)的深度，就可改變輸(shu)(shu)入的功(gong)率。當水(shui)面低于電(dian)(dian)極(ji)(ji)時(shi)，輸(shu)(shu)入功(gong)率為零（即電(dian)(dian)極(ji)(ji)無電(dian)(dian)流）所以(yi)鍋(guo)爐不會燒干鍋(guo)。

常見的電熱鍋爐有哪些

1、常壓電熱鍋爐

一種常壓電(dian)熱(re)(re)鍋爐，它包(bao)括水(shui)平安(an)(an)裝(zhuang)(zhuang)在(zai)底(di)座上的密(mi)封(feng)(feng)筒(tong)(tong)體(ti)、安(an)(an)裝(zhuang)(zhuang)底(di)座上的水(shui)循環裝(zhuang)(zhuang)置和固定安(an)(an)裝(zhuang)(zhuang)在(zai)密(mi)封(feng)(feng)筒(tong)(tong)體(ti)側(ce)壁(bi)上的電(dian)加(jia)熱(re)(re)裝(zhuang)(zhuang)置，所(suo)述密(mi)封(feng)(feng)筒(tong)(tong)體(ti)外側(ce)設(she)置保溫層，所(suo)述電(dian)加(jia)熱(re)(re)裝(zhuang)(zhuang)置包(bao)括至少兩組沿密(mi)封(feng)(feng)筒(tong)(tong)體(ti)長度方向均布(bu)的電(dian)加(jia)熱(re)(re)器(qi)，所(suo)述密(mi)封(feng)(feng)筒(tong)(tong)體(ti)側(ce)壁(bi)上設(she)置數量(liang)與電(dian)加(jia)熱(re)(re)器(qi)數量(liang)相同的法(fa)蘭(lan)筒(tong)(tong)，所(suo)述法(fa)蘭(lan)筒(tong)(tong)與密(mi)封(feng)(feng)筒(tong)(tong)體(ti)貫通，每套(tao)法(fa)蘭(lan)筒(tong)(tong)外端(duan)借助于螺栓安(an)(an)裝(zhuang)(zhuang)法(fa)蘭(lan)盤，所(suo)述電(dian)加(jia)熱(re)(re)器(qi)安(an)(an)裝(zhuang)(zhuang)在(zai)法(fa)蘭(lan)盤內側(ce)，所(suo)述電(dian)加(jia)熱(re)(re)器(qi)還配(pei)套(tao)安(an)(an)裝(zhuang)(zhuang)控(kong)制(zhi)系統，所(suo)述控(kong)制(zhi)系統用(yong)于控(kong)制(zhi)電(dian)加(jia)熱(re)(re)裝(zhuang)(zhuang)置和水(shui)循環裝(zhuang)(zhuang)置。

2、電開水鍋爐

配(pei)(pei)置微電(dian)腦控制器(qi)、陶瓷電(dian)熱管，采用(yong)電(dian)磁閥作(zuo)為補(bu)水裝置配(pei)(pei)合水位電(dian)極、感溫探頭全自動工(gong)作(zuo)，連續大量供應(ying)飲用(yong)開(kai)水，廣泛適用(yong)于政府機(ji)關、企業、工(gong)廠、醫院、學校、賓館、酒店等企事業單位使用(yong)。

3、電蓄開水鍋爐

配(pei)置(zhi)微電(dian)腦控制器、陶瓷電(dian)熱管，采用(yong)(yong)電(dian)磁閥作為補水裝置(zhi)配(pei)合水位(wei)電(dian)極、感溫(wen)探頭利用(yong)(yong)夜(ye)間（低谷電(dian)）時(shi)間全自動(dong)工作，可(ke)以在白天（用(yong)(yong)電(dian)高峰期）大量供應(ying)飲用(yong)(yong)開水，廣泛適(shi)用(yong)(yong)于政府機關(guan)、企業、工廠、醫院(yuan)、學(xue)校、賓(bin)館、酒店等企事業單位(wei)使用(yong)(yong)。

4、電熱蒸汽鍋爐

將水加(jia)熱(re)(re)產(chan)生蒸(zheng)汽(qi)(qi)的(de)電(dian)(dian)鍋(guo)(guo)爐(lu)(lu)(lu)(lu)，又名(ming)電(dian)(dian)熱(re)(re)蒸(zheng)汽(qi)(qi)發生器。按(an)結構分為(wei)立式(shi)和臥式(shi)兩種鍋(guo)(guo)爐(lu)(lu)(lu)(lu)。按(an)產(chan)生的(de)蒸(zheng)汽(qi)(qi)壓(ya)(ya)(ya)力分為(wei)低(di)壓(ya)(ya)(ya)、中壓(ya)(ya)(ya)、高壓(ya)(ya)(ya)三種規(gui)格鍋(guo)(guo)爐(lu)(lu)(lu)(lu)。0.4MPa及以(yi)下工(gong)作(zuo)壓(ya)(ya)(ya)力的(de)電(dian)(dian)熱(re)(re)鍋(guo)(guo)爐(lu)(lu)(lu)(lu)稱為(wei)低(di)壓(ya)(ya)(ya)電(dian)(dian)鍋(guo)(guo)爐(lu)(lu)(lu)(lu)，主要用(yong)于(yu)生活供(gong)熱(re)(re)。0.7~1MPa的(de)電(dian)(dian)熱(re)(re)燕汽(qi)(qi)鍋(guo)(guo)爐(lu)(lu)(lu)(lu)稱為(wei)中壓(ya)(ya)(ya)電(dian)(dian)鍋(guo)(guo)爐(lu)(lu)(lu)(lu)，可供(gong)生活、生產(chan)用(yong)汽(qi)(qi)。1.6MPa以(yi)上的(de)電(dian)(dian)熱(re)(re)蒸(zheng)汽(qi)(qi)鍋(guo)(guo)爐(lu)(lu)(lu)(lu)稱為(wei)高壓(ya)(ya)(ya)電(dian)(dian)鍋(guo)(guo)爐(lu)(lu)(lu)(lu)，現多用(yong)于(yu)試(shi)驗室。由于(yu)承(cheng)壓(ya)(ya)(ya)指(zhi)標不同(tong)，在使用(yong)選型方面要注憊(bei)區分。我國生產(chan)的(de)定型電(dian)(dian)熱(re)(re)蒸(zheng)汽(qi)(qi)鍋(guo)(guo)爐(lu)(lu)(lu)(lu)的(de)最(zui)大出(chu)力為(wei)Zt/h，最(zui)高工(gong)作(zuo)壓(ya)(ya)(ya)力為(wei)1.6MPa.電(dian)(dian)熱(re)(re)熱(re)(re)水鍋(guo)(guo)爐(lu)(lu)(lu)(lu)將水加(jia)熱(re)(re)提供(gong)熱(re)(re)水的(de)電(dian)(dian)鍋(guo)(guo)爐(lu)(lu)(lu)(lu)。

5、電熱熱水鍋爐

在(zai)結構(gou)上也(ye)分立式(shi)和臥式(shi)兩(liang)種。隨著鍋爐(lu)功(gong)率(lv)(lv)的(de)增加(jia)，電(dian)熱熱水(shui)鍋爐(lu)有雙(shuang)頭(tou)和單頭(tou)之(zhi)分。加(jia)熱電(dian)功(gong)率(lv)(lv)在(zai)360kw及以下的(de)臥式(shi)電(dian)熱熱水(shui)鍋爐(lu)，大多做成單頭(tou)，加(jia)熱電(dian)功(gong)率(lv)(lv)大于(yu)360kw的(de)電(dian)熱熱水(shui)鍋爐(lu)，一般(ban)做成雙(shuang)頭(tou)電(dian)鍋爐(lu)。熱水(shui)溫度(du)小(xiao)于(yu)95℃的(de)電(dian)熱熱水(shui)鍋爐(lu)，常用于(yu)供應開水(shui)或洗浴的(de)場所。